Why Is Stainless Steel Magnetic?
Answer: People often use magnets to detect the quality of stainless steel. If the magnet is not attracted, it is genuine and at a fair price. On the contrary, it is considered a fake. In fact, this is an extremely one-sided and unrealistic method of identifying errors.
Austenitic stainless steel is non-magnetic or weakly magnetic; martensitic or ferritic stainless steel is magnetic. However, after austenitic stainless steel is cold processed, the structure of the processed part will also transform to martensite. The greater the processing deformation, the more martensite transformation and the greater the magnetic properties. The product material will not change. A more professional method should be used to detect the material of stainless steel. (Spectrum detection, stainless steel discriminating fluid detection).
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